Australian scientists have discovered an octopus in Indonesia that collects coconut shells for shelter unusually sophisticated behavior that the researchers believe is the first evidence of tool use in an invertebrate animal.

A powerful earthquake off eastern Indonesia briefly triggered a tsunami warning Thursday, causing a stampede of residents to higher ground. Hundreds of building were damaged and at least 42 people injured, some seriously.

Indonesia issued a tsunami warning after a powerful quake struck waters off its eastern coast early Thursday, a local agency said. It was not immediately clear if the temblor caused any injures or damage.

A rescue team guided by a survivor was dispatched into stormy Indonesian seas Tuesday in search of dozens of people said to be still drifting alive after a ferry capsized with more than 250 on board, officials said.

Huge waves and driving rain hindered rescuers Monday as they searched for about 230 people missing and feared dead after a ferry packed with passengers and cargo capsized in a cyclone off Indonesia's Sulawesi island.

A powerful earthquake jolted eastern Indonesia on Monday, killing at least four people, damaging hundreds of homes and briefly triggering a region-wide tsunami warning, officials said as they surveyed the damage.